YoYoFactory CBC SPEC Small (SIZE A) Yo-Yo Bearings
The CBC SPEC bearing was developed to provide the best play and performance found in modern performance yo-yos. Made of stainless steel, these bearings will hold up to anything you can throw at it.
Taking it a step further, the CBC SPEC X is the newest SPEC and features a tighter configuration with smaller balls to reduce friction even more and increase spin time.Choose the “Small” size for the YoYoFactory FAST 201 and Velocity Yo-Yos. For all others, “Large” will be what you want.